ruff/docs/rules/implicit-namespace-package.md
Martin Fischer 28c9263722 Automatically linkify option references in rule documentation
Previously the rule documentation referenced configuration options
via full https:// URLs, which was bad for several reasons:

* changing the website would mean you'd have to change all URLs
* the links didn't work when building mkdocs locally
* the URLs showed up in the `ruff rule` output
* broken references weren't detected by our CI

This commit solves all of these problems by post-processing the
Markdown, recognizing sections such as:

    ## Options

    * `flake8-tidy-imports.ban-relative-imports`

`cargo dev generate-all` will automatically linkify such references
and panic if the referenced option doesn't exist.
Note that the option can also be linked in the other Markdown sections
via e.g. [`flake8-tidy-imports.ban-relative-imports`] since
the post-processing code generates a CommonMark link definition.

Resolves #2766.
2023-02-12 13:19:11 -05:00

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Markdown

# implicit-namespace-package (INP001)
Derived from the **flake8-no-pep420** linter.
## What it does
Checks for packages that are missing an `__init__.py` file.
## Why is this bad?
Python packages are directories that contain a file named `__init__.py`.
The existence of this file indicates that the directory is a Python
package, and so it can be imported the same way a module can be
imported.
Directories that lack an `__init__.py` file can still be imported, but
they're indicative of a special kind of package, known as a "namespace
package" (see: [PEP 420](https://www.python.org/dev/peps/pep-0420/)).
Namespace packages are less widely used, so a package that lacks an
`__init__.py` file is typically meant to be a regular package, and
the absence of the `__init__.py` file is probably an oversight.
## Options
* [`namespace-packages`]
[`namespace-packages`]: ../../settings#namespace-packages